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Residential Heating & Air Conditioning Maintenance

Before The Season Starts, It Is A Good Idea To Have Your Central AC System Tuned Up This usually consists of: A Filter Change, Refrigerant Pressure Check and A Visual Inspection of your ductwork and all other equipment. While some individual items could seem to be insignificant, not doing them can ruin your system over time.

AC Installation Service - Thomson Air Conditioning & Heating
Different companies express what it is they do by calling it different names (“28-point checkup”, “precision tune-up”, or just maintenance), but the basics remain the same. All the while, you could spend exponentially more money by running your poorly maintained air conditioning system.

If you are looking for a way to lower utility bills and cut costs this summer, tuning up your homes HVAC system continually proves to be a worthwhile and sound investment.

Don’t just take our word for it. EnergyStar has an article on residential air conditioning maintenance that you can read.

Maintenance Checklists

Below are lists of services that are performed on your HVAC system during a normal maintenance visit:

  • Inspect unit for proper refrigerant levels and provide quote for adjustment if necessary
  • Clean dirt, leaves and debris from inside cabinet if necessary
  • Inspect base pan for restricted drain openings – remove obstructions as necessary
  • Inspect coil and provide quote for cleaning as needed
  • Inspect cabinet and clean as needed
  • Inspect fan motor and fan blades for wear and damage – on older models lubricate as needed
  • Inspect control box, associated controls/accessories, wiring and connections. Controls may include contactors, relays, circuit boards, capacitors, sump heat and other accessories. All control box and electrical parts should be checked for wear or damage.
  • Inspect compressor and associated tubing for damage
  • Inspect blower assembly (includes blower housing, blower wheel, and motor).
  • On older models, lubricate the motor and inspect and replace the fan belt if needed.
  • Check combustion blower housing for lint and debris and clean as necessary.
  • Inspect the evaporator coil, drain pan, and condensate drain lines. provide quotes for cleaning as needed.
  • Inspect for gas leaks in gas furnaces.
  • Inspect burner assembly – clean and adjust as needed.
  • Inspect ignition system and safety controls – clean and adjust as needed.
  • Inspect the heat exchangers or heating elements.
  • Inspect the flue system – check for proper attachment to the furnace, any dislocated sections, and signs of corrosion. Replace if necessary.
  • Inspect the control box, associated controls, wiring, and connections.
  • Clean or replace air filters.
  • Inspect conditioned airflow system (ductwork) – check for leaks.
  • Monitor system starting characteristics and capabilities.
  • Listen for abnormal noise.
  • Search for the source of unusual odors.
  • Monitor air conditioning and heat pump systems for a correct refrigerant charge.
  • Measure outdoor dry bulb temperature.
  • Measure indoor dry and wet bulb temperature.
  • Measure high and low side system pressures.
  • Monitor the gas furnace for correct line and manifold gas pressure – make adjustments as needed.
  • Measure temperature rise and adjust airflow as needed.
  • Check the vent system for proper operation.
  • Monitor the system for correct line and load volts/amps.
  • Monitor system operation per manufacturer’s specifications.
  • Provide system operation reports and recommend repairs or replacements as necessary.

Note: Not all items apply to every situation. Additional costs may apply according to an existing unit condition in accordance with an individual maintenance plan and contract.

Ready for Comfort You Can Count On?

WHAT TO EXPECT

Clear. Simple. Honest.

HVAC Company Los Angeles - Thomson Air Conditioning & Heating
STEP 01

Talk to a Real Person

No phone trees. Just a friendly team member ready to listen and get you scheduled.

STEP 02

We Show Up On Time

Our techs respect your schedule and your home. You’ll get a call when we’re on the way.

STEP 03

Honest, Expert Solutions

We explain the issue, lay out your options, and only recommend what you truly need.

OUR GUARANTEE

5-Star Service Guarantee

You are guaranteed 5 Star service, period. And for a period of 5 years. If we repair your home’s HVAC system, our labor is guaranteed for 5 years.

Reliable Workmanship

We stand behind our repairs. Every fix, every time.

Peace of Mind

Guaranteed comfort without the fine print.

REVIEWS

Real Customers. Real Experiences.

04/05/2025

It was time to service the fan blower unit and had a pleasant experience again working with Glenn and his trainee George. I appreciated the time Glenn took to ensure George's work met the expectations that Glenn would have performed the job to. It's not often companies have seasoned experienced employees that can share their knowledge and experience with new staff. I hope Thomson keeps Glenn around for many more years!

14/05/2025

Over the years, we've used Thomson to do major HVAC construction, equipment replacement and service. They are always very thorough, knowledgeable, considerate and the prices are fair. They have a lot of experienced technicians on their team and communicating with the office is easy. We get our system serviced every 6 months (very important) and they actually offer a monthly payment plan for that. I didn't take off a star (because they do offer a fantastic service), but it is difficult if something breaks during the weekend. They won't respond until offices open on Monday. But they will get you in as soon as possible and the service is great.

13/05/2025

Very honest company and great customer service. It’s been a long time since we had our AC unit inspected and after all these years it’s still good to go and ready for summer! Ethan did a great job answering all my questions. Quick, efficient and very knowledgeable. Thanks Thomson!

15/05/2025

Ethan was great and was very helpful in helping me understand the unit. He came out the same day I called and had parts on his truck to make the repairs right then and there. Ethan was very friendly and I would recommend him and Thomson Air Conditioning to anyone in the future.

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RESOURCES

THE LATEST

The Ultimate Guide to AC Maintenance and Tune-Ups for Long Beach and Orange County Homeowners


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Maximizing Home Comfort with Energy-Efficient Heating System Upgrades


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Advantages of Heat Pumps for Energy Efficiency


Mar 29, 2024

Your Ultimate Guide to HVAC Maintenance


Mar 29, 2024

SERVICE AREAS

Serving Southern California.
From Coast to Valley.

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Seal Beach
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